So, can this be fixed in firmware? How can I determine if the drive is actually bad?
-- Edmund White ewwh...@mac.com On 6/11/11 10:15 AM, "Pasi Kärkkäinen" <pa...@iki.fi> wrote: >On Sat, Jun 11, 2011 at 08:35:19AM -0500, Edmund White wrote: >> Posted in greater detail at Server Fault >> - [1]http://serverfault.com/q/277966/13325 >> >> I have an HP ProLiant DL380 G7 system running NexentaStor. The >>server has >> 36GB RAM, 2 LSI 9211-8i SAS controllers (no SAS expanders), 2 SAS >>system >> drives, 12 SAS data drives, a hot-spare disk, an Intel X25-M L2ARC >>cache >> and a DDRdrive PCI ZIL accelerator. This system serves NFS to >>multiple >> VMWare hosts. I also have about 90-100GB of deduplicated data on the >> array. >> >> I've had two incidents where performance tanked suddenly, leaving >>the VM >> guests and Nexenta SSH/Web consoles inaccessible and requiring a full >> reboot of the array to restore functionality. In both cases, it was >>the >> Intel X-25M L2ARC SSD that failed or was "offlined". NexentaStor >>failed to >> alert me on the cache failure, however the general ZFS FMA alert was >> visible on the (unresponsive) console screen. >> >> The "zpool status" output showed: >> >> cache >> c6t5001517959467B45d0 FAULTED 2 542 0 too many errors >> >> This did not trigger any alerts from within Nexenta. >> >> I was under the impression that an L2ARC failure would not impact the >> system. But in this case, it was the culprit. I've never seen any >> recommendations to RAID L2ARC for resiliency. Removing the bad SSD >> entirely from the server got me back running, but I'm concerned >>about the >> impact of the device failure and the lack of notification from >> NexentaStor. >> >> What's the current best-choice SSD for L2ARC cache applications these >> days? It seems as though the Intel units are no longer well-regarded. >> > >IIRC recently there was discussion on this list about firmware bug >on the Intel X25 SSDs causing them to fail under high disk IO with "reset >storms". > >Maybe you're hitting that firmware bug. > >-- Pasi > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
